Display screen stretching device and display screen

Abstract

The present application provides a stretching device for a display screen and a display screen. The stretching device includes a housing, two stretching mechanisms symmetrically arranged in the housing along a first direction, and a driving assembly arranged between the two stretching mechanisms. The housing has stretching openings on both side walls along the first direction. The stretching mechanism includes a stretching shaft extending from the stretching opening into the housing and a force transmission shaft arranged on the side of the stretching shaft away from the stretching opening. The driving assembly includes a thermal expansion chamber and a return spring connected to the thermal expansion chamber. One end of the force transmission shaft extends into the thermal expansion chamber, and the other end is connected to the return spring. The driving assembly is configured to apply a thrust to the force transmission shaft when the gas in the thermal expansion chamber expands due to heat, so that the force transmission shaft pushes the stretching shaft out of the housing. When the gas in the thermal expansion chamber contracts due to cooling, the driving assembly stops applying thrust to the force transmission shaft, so that the stretching shaft extends into the housing. The present application solves the problem that existing large-size display screens rely on soft materials to achieve stretchable functions, resulting in low reliability.

Description

Technical Field

[0001] The present application relates to the technical field of screen stretching, and in particular to a stretching device for a display screen and a display screen. Background Art

[0002] Currently, well-known display devices include liquid crystal displays (LCDs), plasma display panels (PDPs), organic light-emitting diode (OLED) displays (OLEDs), field-effect displays (FETs), and electrophoretic displays (EPDs). With the advancement of display technology, a variety of display devices have emerged in recent years, enriching people's lives. Among them, stretchable displays have attracted increasing attention due to their unique and novel stretchability.

[0003] Existing stretchable displays are deformable displays made from flexible materials. They offer advantages such as small size, portability, and low power consumption, and are increasingly being used in various fields. However, the stretchability of these displays relies heavily on the flexible material. Large-scale displays are not only expensive but also generate significant heat during use, which can affect stretchability and reduce reliability. Summary of the Invention

[0004] An embodiment of the present application provides a stretching device for a display screen and a display screen. By arranging a stretching mechanism within a housing and a driving component that drives the stretching mechanism to stretch through thermal expansion, the heat generated by the display screen during use can be converted into power to drive the stretching mechanism to stretch, thereby solving the problem that existing large-size display screens rely on soft materials to achieve stretchable functions and have low reliability.

[0005] The present invention is implemented as follows: a stretching device for a display screen comprises a shell, two stretching mechanisms symmetrically arranged in the shell along a first direction, and a driving assembly arranged between the two stretching mechanisms, wherein the shell is provided with stretching openings on two side walls along the first direction; the stretching mechanism comprises a stretching shaft extending into the shell from the stretching opening and a force transmission shaft arranged on the side of the stretching shaft away from the stretching opening; the driving assembly comprises a thermal expansion chamber and a return spring, one end of the return spring is connected to the thermal expansion chamber, and the other end is connected to the force transmission shaft, one end of the force transmission shaft extends into the thermal expansion chamber; the driving assembly is configured to apply a thrust to the force transmission shaft when the gas in the thermal expansion chamber expands due to heat, so that the force transmission shaft moves in a direction close to the stretching opening to push the stretching shaft out of the shell, and stop applying thrust to the force transmission shaft when the gas in the thermal expansion chamber contracts due to cooling, so that the force transmission shaft moves away from the stretching opening to allow the stretching shaft to extend into the shell.

[0006] In one embodiment, the stretching axis includes a first axis and a second axis;

[0007] A first adsorption member is provided on a side surface of the first shaft close to the force transmission shaft, and a second adsorption member is provided on a side surface of the force transmission shaft close to the first shaft. The first adsorption member and the second adsorption member are opposite to each other in the first direction and attract each other.

[0008] In one embodiment, a stretching groove is provided on the side wall of the shell along the first direction, the second shaft is used to extend into the stretching groove, a first fixing member is provided on the bottom surface of the stretching groove, and a second fixing member is provided at the end of the second shaft, and the first fixing member and the second fixing member attract each other.

[0009] In one embodiment, the thermal expansion chamber includes a first thermal expansion chamber and a second thermal expansion chamber separated from each other, the return spring is connected to the first thermal expansion chamber, and one end of the force transmission shaft extends into the second thermal expansion chamber;

[0010] The driving assembly further includes a stopper, a connecting rod, and a transmission assembly, wherein the stopper is disposed between the stretching shaft and the force transmission shaft, the transmission assembly is disposed in the first thermal expansion chamber, one end of the connecting rod extends into the first thermal expansion chamber and is connected to the transmission assembly, and the other end of the connecting rod is connected to the stopper;

[0011] The driving assembly is configured to drive the connecting rod to move the stopper when the gases in the first thermal expansion chamber and the second thermal expansion chamber are both expanded by heat, and to apply a thrust to the force transmission shaft so that the force transmission shaft moves in a direction close to the stretching shaft to push the stretching shaft out of the housing; and to stop applying the thrust to the force transmission shaft so that the force transmission shaft moves away from the stretching shaft and to drive the connecting rod to move the stopper to its original position when the gases in the first thermal expansion chamber and the second thermal expansion chamber are both contracted by cold.

[0012] In one embodiment, the transmission assembly includes a fixed plate, a transmission spring, and a force transmission plate, wherein the fixed plate is connected to the inner wall of the first thermal expansion chamber, and the transmission spring is connected between the fixed plate and the force transmission plate;

[0013] One end of the connecting rod extends into the first thermal expansion chamber and is connected to the force transmission plate.

[0014] In one embodiment, the connecting rod includes a support rod and two connecting rods symmetrically arranged along the first direction, one end of the support rod is connected to the force transmission plate, the other end of the support rod is movably connected to the two connecting rods respectively, and the other end of the connecting rod is movably connected to the stop block.

[0015] In one embodiment, the connecting rod includes a first rod and a second rod movably connected to each other, the first rod is movably connected to the support rod, and the second rod is movably connected to the stopper;

[0016] A fixed support rod connected to the shell is respectively provided on different sides of the connecting rod, and the two fixed support rods respectively abut against the first rod and the second rod.

[0017] In one embodiment, the number of the transmission assemblies is two, and the two transmission assemblies are symmetrically arranged in the first thermal expansion chamber along a second direction, and the second direction is perpendicular to the first direction;

[0018] There are two connecting rods, which are symmetrically arranged on both sides of the first thermal expansion chamber along the second direction, and the two support rods are connected to the force transmission plates of the two transmission assemblies in a one-to-one correspondence;

[0019] The stopper includes a first stopper and a second stopper, and the first stopper and the second stopper are respectively connected to the connecting rods of different connecting rods.

[0020] In one embodiment, a first guide member is provided on the inner surface of the side wall of the housing along the first direction;

[0021] The first thermal expansion chamber is connected to a connecting platform located on the outer periphery of the power transmission shaft, and a second guide member is provided on a surface of the connecting platform away from the first thermal expansion chamber;

[0022] The stopper is located between the first guide member and the second guide member and moves along a second direction; the second direction is perpendicular to the first direction.

[0023] The beneficial effect of the stretching device of the display screen provided by the present application is that: compared with the prior art, the present application includes a shell and two stretching mechanisms symmetrically arranged in the shell, which can achieve bidirectional stretching. The stretching mechanism includes a stretching shaft and a force transmission shaft. A driving assembly is arranged between the two stretching mechanisms. The driving assembly includes a thermal expansion chamber and a reset spring. When the gas in the thermal expansion chamber expands due to heat, it will apply thrust to the force transmission shaft, so that the force transmission shaft pushes the stretching shaft to move outside the shell to achieve stretching of the display screen. When the gas in the expansion chamber cools down, it will stop applying thrust to the force transmission shaft. Under the action of the elastic force of the reset spring, the force transmission shaft is pulled back, and the stretching shaft is completely extended into the shell to achieve the reset of the display screen. Since the stretching structure adopts a mechanical structure, it is not affected by material properties and has higher reliability. Moreover, during the stretching process, the stretching mechanism adopts heat drive, which can consume the heat generated when the display screen is in use, which is beneficial to improving the heat dissipation effect of the display screen.

[0024] An embodiment of the present application also provides a display screen, comprising a stretching device and a pixel module of the display screen as described in any of the above embodiments, wherein the stretching device of the display screen is made of a thermally conductive material; the side surface of the pixel module parallel to its thickness direction is connected to the surface of the side of the stretching axis away from the force transmission axis.

[0025] In one embodiment, a heat conductor is connected to a side surface of the pixel module parallel to its thickness direction, and the heat conductor is bonded to a surface of the stretching axis away from the force transmission axis by adhesive.

[0026] The beneficial effect of the display screen provided by the present application is that: the stretching device of the above-mentioned display screen is adopted. Compared with the prior art, the present application includes a shell and two stretching mechanisms symmetrically arranged in the shell, which can realize bidirectional stretching. The stretching mechanism includes a stretching shaft and a force transmission shaft. A driving assembly is arranged between the two stretching mechanisms. The driving assembly includes a thermal expansion chamber and a reset spring. When the gas in the thermal expansion chamber expands due to heat, it will apply thrust to the force transmission shaft, so that the force transmission shaft pushes the stretching shaft to move outside the shell to achieve stretching of the display screen. When the gas in the expansion chamber contracts due to cooling, it will stop applying thrust to the force transmission shaft. Under the action of the elastic force of the reset spring, the force transmission shaft is pulled back, and the stretching shaft is completely extended into the shell to achieve the reset of the display screen. Since the stretching structure adopts a mechanical structure, it is not affected by material properties and has higher reliability. Moreover, during the stretching process, the stretching mechanism adopts heat drive, which can consume the heat generated when the display screen is in use, which is beneficial to improving the heat dissipation effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of a stretching device for a display screen provided in Example 1 of the present application;

[0028] Figure 2 yes Figure 1 The local structure diagram of

[0029] Figure 3 This is a schematic structural diagram of the stretching axis of the stretching device for the display screen provided in Example 1 of the present application being stretched outward;

[0030] Figure 4 This is a schematic diagram of the structure of the display screen provided in Example 2 of the present application;

[0031] Figure 5 This is a partial schematic diagram of the connection between the pixel module and the stretching device of the display screen provided in the second embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the state of the display screen provided in the second embodiment of the present application when it is not stretched;

[0033] Figure 7This is a schematic diagram of the state of the display screen provided in Example 2 of the present application when it is stretched.

[0034] Reference numerals: 1, housing; 10, stretching opening; 11, stretching slot; 12, fixed support rod; 13, first guide member; 110, first fixing member;

[0035] 2. Stretching shaft; 21. First shaft; 210. First adsorption member; 22. Second shaft; 220. Second fixing member; 3. Force transmission shaft; 30. Second adsorption member;

[0036] 4. Thermal expansion chamber; 41. First thermal expansion chamber; 42. Second thermal expansion chamber; 5. Return spring; 6. Stopper; 61. First stopper; 62. Second stopper;

[0037] 7. Connecting rod; 71. Support rod; 72. Connecting rod; 721. First rod; 722. Second rod; 8. Transmission assembly; 81. Fixing plate; 82. Transmission spring; 83. Force transmission plate; 9. Connecting platform; 91. Second guide member;

[0038] 100. Display screen stretching device; 200. Pixel module; 201. Heat conducting element; 202. Adhesive. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0043] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0044] The embodiments of the present application provide a stretching device for a display screen and a display screen, which solve the problem that existing large-size display screens rely on soft materials to achieve stretchable functions and have low reliability.

[0045] Example 1

[0046] refer to Figure 1 The stretching device 100 for a display screen provided in the first embodiment of the present application includes a shell 1, two stretching mechanisms symmetrically arranged in the shell 1 along a first direction, and a driving assembly arranged between the two stretching mechanisms. The shell 1 is provided with a stretching opening 10 on two side walls along the first direction; the stretching mechanism includes a stretching shaft 2 extending into the shell 1 from the stretching opening 10 and a force transmission shaft 3 arranged on the side of the stretching shaft 2 away from the stretching opening 10; the driving assembly includes a thermal expansion chamber 4 and a return spring 5, one end of the return spring 5 is connected to the thermal expansion chamber 4, and the other end is connected to the force transmission shaft 3, one end of the force transmission shaft 3 extends into the thermal expansion chamber 4; the driving assembly is configured to apply a thrust to the force transmission shaft 3 when the gas in the thermal expansion chamber 4 expands due to heat, so that the force transmission shaft 3 moves in a direction close to the stretching opening 10 to push the stretching shaft 2 out of the shell 1, and stop applying thrust to the force transmission shaft 3 when the gas in the thermal expansion chamber 4 contracts due to cooling, so that the force transmission shaft 3 moves in a direction away from the stretching opening 10 so that the stretching shaft 2 extends into the shell 1.

[0047] The stretching device 100 of the display screen of the embodiment of the present application is connected between the pixel modules 200 of the display screen for use. The stretching principle of the stretching device 100 of the display screen of the embodiment of the present application is as follows: in the initial state, the gas in the thermal expansion chamber 4 does not expand due to heat. At this time, the return spring 5 is in the original state, and the force transmission shaft 3 and the stretching shaft 2 are all located in the shell 1. When the display screen starts to be used, the heat generated by the pixel module 200 will be transferred to the stretching device, specifically to the thermal expansion chamber 4, causing the gas in the thermal expansion chamber 4 to expand, thereby The air pressure becomes stronger, pushing the force transmission shaft 3 to move in the direction close to the stretching shaft 2 until the force transmission shaft 3 pushes the stretching shaft 2 from the inside of the shell 1 to the outside of the shell 1, thereby stretching the display screen. During the movement of the force transmission shaft 3, the reset spring 5 will be stretched. When the display screen stops being used, the pixel module 200 no longer generates heat, and the heat transferred to the thermal expansion chamber 4 gradually decreases. At this time, the air pressure in the thermal expansion chamber 4 gradually decreases. Under the pulling force of the reset spring 5, the force transmission shaft 3 will move in the direction away from the stretching shaft 2, and the stretching shaft 2 will also re-extend into the shell 1, thereby resetting the display screen.

[0048] During the entire stretching process described above, there is no need for manual intervention to apply tension to the stretching shaft 2. The heat generated by the pixel module 200 itself can drive the stretching shaft 2 to complete the stretching action, which is more energy-saving and environmentally friendly. Since the entire stretching device is made of a mechanical mechanism, the stretching shaft 2 can also automatically reset when the pixel module 200 does not generate heat. That is to say, the heat generated when the display screen is working will drive the stretching shaft 2 to achieve stretching. When the display screen stops working and does not generate heat, the stretching shaft 2 will also automatically reset. In this way, the heat generated by the display screen can be effectively released, and the heat dissipation area can be increased after the display screen is stretched to continue to dissipate heat, and the heat dissipation effect is better. In addition, since the heat generated by the pixel module 200 itself will be converted into kinetic energy to drive the stretching shaft 2 to stretch, there is no need to configure an additional drive device for the stretching shaft 2, and the stretching of the display screen can be well achieved, enhancing the visual experience. Compared with the existing stretching function that relies on soft materials, the stretching device made of a pure mechanical mechanism in this application not only has high stretching reliability, but is also not affected by material properties. The mechanical stretching method makes the stretching operation simpler and more convenient.

[0049] In the embodiment of the present application, the entire stretching device can be made of a metal material with relatively obvious heat absorption. In this way, when the stretching device is connected to the pixel module 200 of the display screen, the heat generated by the pixel module 200 will be easily transferred to the stretching device, so that the gas in the thermal expansion chamber 4 of the stretching device will expand due to the heat, so as to push the force transmission shaft 3 to move in the direction close to the stretching shaft 2, so that the stretching shaft 2 is pushed outside the shell 1 to achieve the stretching of the display screen. This not only can quickly release the heat generated when the display screen is used, but also can increase the heat dissipation area after the display screen is stretched, so that the heat dissipation effect of the display screen is better.

[0050] It should be noted that when the force transmission shaft 3 moves in the direction close to the stretching shaft 2, the stretching shaft 2 can be pushed from the inside of the shell 1 to the outside of the shell 1, and the force transmission shaft 3 can move in the direction away from the stretching shaft 2 under the elastic force of the reset spring 5. At this time, the specific implementation method of the stretching shaft 2 extending from the outside of the shell 1 into the shell 1 can be to connect the force transmission shaft 3 and the stretching shaft 2 together, so that the force transmission shaft 3 and the stretching shaft 2 move synchronously. When the force transmission shaft 3 moves in the direction close to the stretching shaft 2, the stretching shaft 2 will move to the outside of the shell 1. When the force transmission shaft 3 moves in the direction away from the stretching shaft 2, the stretching shaft 2 will follow the force transmission shaft 3 and move into the shell 1. In this way, the stretching of the stretching shaft 2 can be simply and conveniently reset.

[0051] Specifically, the stretching shaft 2 and the force transmission shaft 3 can be connected together by being fixed together, or magnets can be provided on the side of the stretching shaft 2 close to the force transmission shaft 3 and on the side of the force transmission shaft 3 close to the stretching shaft 2. In this way, the stretching shaft 2 and the force transmission shaft 3 can be connected together through the magnets, and when the stretching device is manufactured and installed, the stretching shaft 2 and the force transmission shaft 3 are independent of each other, which is more convenient for manufacturing and installing the stretching device.

[0052] In some embodiments, reference Figure 2 The stretching shaft 2 includes a first shaft 21 and a second shaft 22; a first adsorption component 210 is provided on the side surface of the first shaft 21 close to the force transmission shaft 3, and a second adsorption component 30 is provided on the side surface of the force transmission shaft 3 close to the first shaft 21. The first adsorption component 210 and the second adsorption component 30 are relative to each other in the first direction and attract each other.

[0053] Through the above settings, by utilizing the principle of mutual attraction between the first adsorption component 210 and the second adsorption component 30, the first shaft 21 of the stretching shaft 2 and the force transmission shaft 3 can be connected together, so that when the force transmission shaft 3 moves in the direction close to the stretching shaft 2, the stretching shaft 2 can be pushed out of the shell 1, and when the force transmission shaft 3 moves in the direction away from the stretching shaft 2, it can also drive the stretching shaft 2 to move into the shell 1. At the same time, since the first adsorption component 210 and the second adsorption component 30 attract each other, the connection between the force transmission shaft 3 and the first shaft 21 can be made faster and more convenient, and the force transmission shaft 3 can also be coaxially connected with the first shaft 21, which is beneficial to the movement of the first shaft 21 and the force transmission shaft 3 along the first direction, thereby ensuring the stretching effect of the stretching device.

[0054] Among them, the first adsorption part 210 and the second adsorption part 30 can be made of magnets. Specifically, the first adsorption part 210 and the second adsorption part 30 can be magnet sheets with the same shape and size. When the shape and size of the side surface of the first shaft 21 close to the force transmission shaft 3 are different from the shape and size of the side surface of the force transmission shaft 3 close to the first shaft 21, the first adsorption part 210 can be set in the middle position of the side surface of the first shaft 21 close to the force transmission shaft 3, and the second adsorption part 30 can be set in the middle position of the side surface of the force transmission shaft 3 close to the first shaft 21, to ensure that the first adsorption part 210 and the second adsorption part 30 are set more firmly, and the first adsorption part 210 and the second adsorption part 30 can be relative to each other in the first direction, so that the first adsorption part 210 and the second adsorption part 30 can be adsorbed together to make the first shaft 21 and the force transmission shaft 3 coaxially distributed along the first direction.

[0055] In the embodiment of the present application, in addition to connecting the stretching shaft 2 and the force transmission shaft 3 together to move the stretching shaft 2 from outside the shell 1 to inside the shell 1, a separate structure can also be set to apply force to the stretching shaft 2 to make the stretching shaft 2 return to the shell 1.

[0056] Specifically, refer to Figure 3 In some embodiments, a stretching groove 11 is provided on the side wall of the shell 1 along the first direction, and the second shaft 22 is used to extend into the stretching groove 11. A first fixing member 110 is provided on the bottom surface of the stretching groove 11, and a second fixing member 220 is provided at the end of the second shaft 22. The first fixing member 110 and the second fixing member 220 attract each other.

[0057] Through the above arrangement, when the force transmission shaft 3 and the first shaft 21 are not connected together, when the gas in the thermal expansion chamber 4 is thermally expanded and pushes the force transmission shaft 3 to move in the direction close to the stretching shaft 2, the force transmission shaft 3 will push the first shaft 21 to move outward from the shell 1, thereby causing the entire stretching shaft 2 to move outward from the shell 1. When the gas in the thermal expansion chamber 4 no longer receives heat and gradually cools down, the air pressure in the thermal expansion chamber 4 decreases and no longer applies thrust to the force transmission shaft 3. At this time, the force transmission shaft 3 will move in the direction away from the first shaft 21 under the elastic force of the return spring 5. Until it returns to its original position, and the stretching shaft 2 returns to its original position by relying on the mutual adsorption of the first fixing member 110 and the second fixing member 220. Since the first fixing member 110 and the second fixing member 220 attract each other, after the force transmission shaft 3 stops applying thrust to the first shaft 21, the second fixing member 220 set on the second shaft 22 will approach it under the attraction of the first fixing member 110, so that the second shaft 22 extends into the stretching groove 11, which will drive the first shaft 21 to extend into the shell 1, so that the entire stretching shaft 2 returns to its original position, realizing the contraction of the display screen.

[0058] It should be noted that, when the first fixing member 110 and the second fixing member 220 are adsorbed on each other to achieve the contraction of the stretching shaft 2 after stretching, the force transmission shaft 3 and the first shaft 21 may not be connected, but may be coaxially arranged along the first direction. Of course, the second adsorption member 30 may be arranged on the side surface of the force transmission shaft 3 close to the first shaft 21, and the first adsorption member 210 may be arranged on the side surface of the first shaft 21 close to the force transmission shaft 3. In this way, after the first adsorption member 210 and the second adsorption member 30 are adsorbed on each other, it is equivalent to accurately positioning the direction of movement of the force transmission shaft 3, so as to ensure that the force transmission shaft 3 pushes the first shaft 21 toward the outside of the shell 1 along the first direction, that is, the stretching shaft 2 moves toward the outside of the shell 1 along the first direction, and the overall stretching direction of the display screen will not deviate, and will not affect the stretching effect.

[0059] Among them, the first fixing member 110 and the second fixing member 220 can be made of magnets. Specifically, the first fixing member 110 and the second fixing member 220 can be magnetic magnet sheets. During installation, they can be directly bonded to the bottom surface of the stretching groove 11 and the end of the second shaft 22 with adhesive 202. This can greatly improve the installation efficiency of the first fixing member 110 and the second fixing member 220.

[0060] The first fixing member 110 , the second fixing member 220 , the first adsorption member 210 and the second adsorption member 30 may be made of the same magnetic material, which can save manufacturing costs and reduce manufacturing difficulty.

[0061] In the examples of this application, reference Figure 3The stretching shaft 2 includes a first shaft 21 and two second shafts 22 symmetrically distributed with each other. The first shaft 21 and the second shaft 22 are parallel to each other. Thus, when the first shaft 21 moves, it will drive the second shafts 22 to move synchronously in the same direction. When the stretching shaft 2 needs to be retracted after being stretched, the two second shafts 22 can move into the shell 1 to drive the first shaft 21 to move into the shell 1. This greatly enhances the power to retract the stretching shaft 2 into the shell 1 and ensures that the entire stretching shaft 2 can be smoothly retracted into the shell 1. At the same time, the symmetrical arrangement of the two second shafts 22 can evenly apply the attraction of the first fixing member 110 to the second fixing member 220 to the stretching shaft 2, ensuring that the stretching shaft 2 can quickly move along the first direction into the shell 1 to complete the retraction.

[0062] In some embodiments, reference Figure 2 and Figure 3 The thermal expansion chamber 4 includes a first thermal expansion chamber 41 and a second thermal expansion chamber 42 separated from each other, the return spring 5 is connected to the first thermal expansion chamber 41, and one end of the force transmission shaft 3 extends into the second thermal expansion chamber 42; the driving assembly also includes a block 6, a connecting rod 7 and a transmission assembly 8, the block 6 is arranged between the stretching shaft 2 and the force transmission shaft 3, the transmission assembly 8 is arranged in the first thermal expansion chamber 41, one end of the connecting rod 7 extends into the first thermal expansion chamber 41 and is connected to the transmission assembly 8, and the other end of the connecting rod 7 is connected to the block 6; the driving assembly The component is configured to, when the gases in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 are both expanded by heat, drive the connecting rod 7 to move the stopper 6 away, and apply a thrust to the force transmission shaft 3 to move the force transmission shaft 3 in a direction close to the stretching shaft 2 to push the stretching shaft 2 out of the housing 1; when the gases in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 are both contracted by cold, stop applying thrust to the force transmission shaft 3 to move the force transmission shaft 3 in a direction away from the stretching shaft 2, and drive the connecting rod 7 to drive the stopper 6 to move to its original position.

[0063] Among them, the volume of the first thermal expansion chamber 41 is larger than the volume of the second thermal expansion chamber 42. When the thermal expansion chamber 4 receives the heat generated by the pixel module 200, the gas in the second thermal expansion chamber 42 is first heated and expanded, so that the air pressure in the second thermal expansion chamber 42 increases. Similarly, when the thermal expansion chamber 4 no longer receives heat, the gas in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 will gradually cool down, but the gas in the second thermal expansion chamber 42 will cool down before the gas in the first thermal expansion chamber 41, and the air pressure in the second thermal expansion chamber 42 will also decrease before the air pressure in the first thermal expansion chamber 41.

[0064] Specifically, after the heat generated by the pixel module 200 is transferred to the thermal expansion chamber 4, the gas in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 will expand due to the heat, causing the air pressure in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 to increase. At this time, the air pressure in the first thermal expansion chamber 41 will drive the connecting rod 7 to bend to drive the block 6 to move away from between the stretching shaft 2 and the force transmission shaft 3. At the same time, the air pressure in the second thermal expansion chamber 42 will drive the force transmission shaft 3 to move toward the direction close to the stretching shaft 2. Since the block 6 between the force transmission shaft 3 and the stretching shaft 2 has been removed, the force transmission shaft 3 will continue to move until it contacts the stretching shaft 2 and push the stretching shaft 2 out of the shell 1. When the pixel module 200 does not generate heat, the gas in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 no longer receives heat and gradually cools down, causing the air pressure in the first thermal expansion chamber 41 and the second thermal expansion chamber 42 to decrease. Since the air pressure in the second thermal expansion chamber 42 will decrease first, the force transmission shaft 3 will first move away from the stretching shaft 2 to its original position under the action of the elastic force of the return spring 5. Then, when the air pressure in the first thermal expansion chamber 41 decreases, the connecting rod 7 will not apply tension to the block 6, and the block 6 will move back to between the force transmission shaft 3 and the stretching shaft 2 under the action of its own gravity.

[0065] In the above process, after the heat generated by the pixel module 200 is transferred to the thermal expansion chamber 4, the increase in air pressure in the second thermal expansion chamber 42 requires applying a thrust to the force transmission shaft 3 to push the stretching shaft 2 out of the shell 1. The increase in air pressure in the first thermal expansion chamber 41 requires driving the connecting rod 7 to drive the block 6 to move. That is to say, the heat generated by the pixel module 200 will be converted into kinetic energy required by multiple structures, so that the heat generated by the pixel module 200 can be released more quickly, so that the heat dissipation effect of the display screen is better when in use.

[0066] In some embodiments, reference Figure 2 The transmission assembly 8 includes a fixed plate 81, a transmission spring 82 and a force transmission plate 83. The fixed plate 81 is connected to the inner wall of the first thermal expansion chamber 41, and the transmission spring 82 is connected between the fixed plate 81 and the force transmission plate 83; one end of the connecting rod 7 extends into the first thermal expansion chamber 41 and is connected to the force transmission plate 83.

[0067] With the above arrangement, when the gas in the first thermal expansion chamber 41 expands due to heat, causing the pressure in the first thermal expansion chamber 41 to increase, the increased pressure pushes the force transmission plate 83 away from the fixed plate 81, and the transmission spring 82 is then stretched, causing the end of the connecting rod 7 extending into the first thermal expansion chamber 41 to move outward from the first thermal expansion chamber 41, thereby causing the stopper 6 connected to the connecting rod 7 to move out from between the stretching shaft 2 and the force transmission shaft 3. When the gas in the first thermal expansion chamber 41 gradually cools, causing the pressure in the first thermal expansion chamber 41 to decrease, the thrust applied to the force transmission plate 83 gradually decreases until it disappears. During this process, the elastic force generated by the stretched force transmission spring exerts a pulling force on the force transmission plate 83, causing the force transmission plate 83 to move toward the fixed plate 81, thereby driving the stopper 6 connected to the connecting rod 7 to move back between the stretching shaft 2 and the force transmission shaft 3.

[0068] It should be noted that an adjustment hole is provided on the first thermal expansion chamber 41 for one end of the connecting rod 7 to extend into, and the force transmission plate 83 is horizontally arranged in the first thermal expansion chamber 41, that is, the thickness direction of the force transmission plate 83 is perpendicular to the first direction, and a fixed plate 81 is respectively provided on the two side walls of the first thermal expansion chamber 41 along the first direction, and the two fixed plates 81 are respectively connected to the force transmission plate 83 through force transmission springs. In this way, when the air pressure in the first thermal expansion chamber 41 increases, the force transmission plate 83 can be evenly pushed, thereby pushing the end of the connecting rod 7 extending into the first thermal expansion chamber 41 to move outside the first thermal expansion chamber 41. In addition, the force transfer plate 83 needs to be placed close to the inner wall of the first thermal expansion chamber 41 when it is set, ensuring that the air pressure in the first thermal expansion chamber 41 will not leak out from the gap between the force transfer plate 83 and the inner wall of the first thermal expansion chamber 41 and the adjustment hole, so that the air pressure in the first thermal expansion chamber 41 can push the force transfer plate 83 to ensure that the block 6 connected to the connecting rod 7 can be removed from between the stretching shaft 2 and the force transfer shaft 3, and will not affect the force transfer shaft 3 pushing the stretching shaft 2 to the outside of the outer shell 1.

[0069] In some embodiments, reference Figure 2 The connecting rod 7 includes a support rod 71 and two connecting rods 72 symmetrically arranged along the first direction. One end of the support rod 71 is connected to the force transmission plate 83, and the other end of the support rod 71 is movably connected to the two connecting rods 72 respectively. The other end of the connecting rod 72 is movably connected to the stopper 6.

[0070] Among them, the two connecting rods 72 and the blocks 6 connected thereto are symmetrically arranged on both sides of the support rod 71 along the first direction, so that the support rod 71 can drive the two connecting rods 72 to move simultaneously, and the blocks 6 connected to the two connecting rods 72 will move in the same direction at the same time.

[0071] Through the above arrangement, the force transmission plate 83 will drive the support rod 71 to move when it moves, and the support rod 71 is movably connected to the two connecting rods 72 respectively, so that the block 6 connected by the two connecting rods 72 can be moved in the same direction at the same time. Not only can the two stretching mechanisms achieve the effect of synchronous stretching, but also the structure of the driving component can be simplified, thereby simplifying the structure of the stretching device, saving production costs, and reducing the difficulty of assembling the stretching device.

[0072] In some embodiments, in addition to the structural design of the above-mentioned connecting rod 7, the connecting rod 7 can also be designed to include a support rod 71 and a connecting rod 72 movably connected to one end of the support rod 71, and the other end of the connecting rod 72 is connected to the stop block 6. Under this design, two connecting rods 7 need to be set, and the two connecting rods 7 can be symmetrically arranged along the first direction. The support rod 71 of each connecting rod 7 extends into the first thermal expansion chamber 41 and is connected to the force transmission plate 83. When the force transmission plate 83 moves away from the fixed plate 81, the two support rods 71 will move out of the first thermal expansion chamber 41 at the same time. At this time, the connecting rod 72 connected to the two support rods 71 will move at the same time, so that the stop block 6 connected to the two connecting rods 72 will move in the same direction at the same time, so that the effect of synchronous stretching of the two stretching mechanisms can be achieved.

[0073] In some embodiments, reference Figure 2 The connecting rod 72 includes a first rod 721 and a second rod 722 movably connected to each other, the first rod 721 is movably connected to the support rod 71, and the second rod 722 is movably connected to the stopper 6; a fixed support rod 12 connected to the outer shell 1 is respectively provided on different sides of the connecting rod 72, and the two fixed support rods 12 respectively abut the first rod 721 and the second rod 722.

[0074] Specifically, when the air pressure in the first thermal expansion chamber 41 increases and the support rod 71 moves out of the first thermal expansion chamber 41, for example, the support rod 71 moves upward, the end of the first rod 721 close to the support rod 71 will move upward, and the end of the first rod 721 away from the support rod 71 will move downward, thereby driving the end of the second rod 722 close to the first rod 721 to move downward, and the end of the second rod 722 away from the first rod 721 to move upward. Since the end of the second rod 722 away from the first rod 721 is connected to the stop block 6, when the end of the second rod 722 away from the first rod 721 moves upward, it will drive the stop block 6 to move upward, thereby moving out of the position between the stretching shaft 2 and the force transmission shaft 3. When the air pressure in the first thermal expansion chamber 41 decreases, the force transmission spring applies a pulling force to the force transmission plate 83 to move the support rod 71 into the first thermal expansion chamber 41, that is, the support rod 71 moves downward, and the end of the first rod 721 close to the support rod 71 will move downward, while the end of the first rod 721 away from the support rod 71 will move upward, thereby driving the end of the second rod 722 close to the first rod 721 to move upward, and the end of the second rod 722 away from the first rod 721 will move downward, which will also drive the stopper 6 to move downward, so that the stopper 6 moves back to the position between the stretching shaft 2 and the force transmission shaft 3.

[0075] It should be noted that a fixed support rod 12 connected to the outer shell 1 is provided on different sides of the connecting rod 72, and the two fixed support rods 12 respectively abut the first rod 721 and the second rod 722, which is equivalent to the fixed support rod 12 being the fulcrum for the movement of the first rod 721 and the second rod 722. In this way, when the first rod 721 moves up and down close to one end of the support rod 71, the first end of the first rod 721 will move in the opposite direction, thereby driving the two ends of the second rod 722 to move in different directions, ensuring that the block 6 can move up and down following the up and down movement of the support rod 71.

[0076] Among them, the fixed support rod 12 can be abutted against the middle position of the first rod 721 and the middle position of the second rod 722, so that the movement of the first rod 721 and the second rod 722 can be better balanced, so that the supporting force required for the movement of the first rod 721 and the second rod 722 at both ends is the same. When the support rod 71 moves up and down, the movement of the first rod 721 and the second rod 722 is smoother and faster.

[0077] In the embodiment of the present application, the structure in which the transmission assembly 8, the connecting rod 7 and the stopper 6 are combined together is to move the stopper 6 from between the force transmission shaft 3 and the stretching shaft 2 before the force transmission shaft 3 pushes the stretching shaft 2 out of the outer shell 1, and to move the stopper 6 back between the force transmission shaft 3 and the stretching shaft 2 after the force transmission shaft 3 returns to its original position and the stretching shaft 2 shrinks back into the outer shell 1. Therefore, the structure in which the transmission assembly 8, the connecting rod 7 and the stopper 6 are combined together can be set up in only one, that is, a transmission assembly 8 and a connecting rod 7 are set up to drive the stopper 6 to move up and down from one side of the first thermal expansion chamber 41 along the second direction.

[0078] In some embodiments, reference Figure 1 There are two transmission assemblies 8, and the two transmission assemblies 8 are symmetrically arranged in the first thermal expansion chamber 41 along the second direction, and the second direction is perpendicular to the first direction; there are two connecting rods 7, and the two connecting rods 7 are symmetrically arranged on both sides of the first thermal expansion chamber 41 along the second direction, and the two support rods 71 are connected to the force transmission plates 83 of the two transmission assemblies 8 in a one-to-one correspondence; the stopper 6 includes a first stopper 61 and a second stopper 62, and the first stopper 61 and the second stopper 62 are respectively connected to the connecting rods 72 of different connecting rods 7.

[0079] Through the above arrangement, the first stopper 61 and the second stopper 62 are arranged in parallel along the second direction, one of the two connecting rods 7 drives the first stopper 61 to move, and the other connecting rod 7 drives the second stopper 62 to move, so that the heat generated by the display screen can be converted into kinetic energy required by more structures, which is conducive to releasing more heat in a short time.

[0080] In some embodiments, reference Figure 2 and Figure 3 A first guide member 13 is provided on the inner surface of the side wall of the shell 1 along the first direction; the first thermal expansion chamber 41 is connected to a connecting platform 9 located on the outer periphery of the force transmission shaft 3, and a second guide member 91 is provided on the side surface of the connecting platform 9 away from the first thermal expansion chamber 41; the stopper 6 is located between the first guide member 13 and the second guide member 91 and moves along the second direction; the second direction is perpendicular to the first direction.

[0081] Through the above settings, the stop block 6 can move in the second direction along the first guide member 13 and the second guide member 91. This not only makes the stop block 6 move more smoothly, but also ensures that the stop block 6 will not be offset when moving between the force transmission shaft 3 and the stretching shaft 2, thereby well limiting the moving direction of the stop block 6.

[0082] Example 2

[0083] refer to Figure 4Embodiment 2 of the present application provides a display screen, comprising a stretching device 100 and a pixel module 200 of a display screen as in any of the above embodiments, wherein the stretching device 100 of the display screen is made of a thermally conductive material; the side surface of the pixel module 200 parallel to its thickness direction is connected to the surface of the side of the stretching axis 2 away from the force transmission axis 3.

[0084] The detailed structure of the stretching device 100 of the display screen can be referred to the above-mentioned embodiment and will not be repeated here. It can be understood that since the stretching device 100 of the display screen mentioned above is used in the display screen of the present application, the embodiment of the display screen of the present application includes all technical solutions of all embodiments of the stretching device 100 of the display screen mentioned above, and can achieve the technical effects achieved by the above-mentioned technical solutions.

[0085] Among them, the stretching device 100 of the display screen is made of heat-conducting material, that is, the stretching device 100 of the entire display screen can conduct heat. In this way, when the stretching device 100 of the display screen is connected to the pixel module 200, the heat generated by the pixel module 200 can be quickly transferred to the stretching device 100 of the display screen, thereby causing the gas in the thermal expansion chamber 4 to expand to increase the air pressure in the thermal expansion chamber 4, thereby achieving the stretching of the stretching axis 2, and then achieving the stretching of the display screen. After the display screen is stretched, the distance between each pixel module 200 increases, effectively increasing the heat dissipation area of the display screen and improving the heat dissipation efficiency of the display screen.

[0086] It should be noted that the display screen includes a plurality of pixel modules 200, and the plurality of pixel modules 200 are arranged in an array. Any two adjacent pixel modules 200 in the same row are connected by a stretching device 100 of the display screen, and any two adjacent pixel modules 200 in the same column are also connected by a stretching device 100 of the display screen. In this way, the display screen can be stretched from different directions. Figure 6 Schematic diagram of the display screen in an unstretched state. When the display screen is not stretched, the distance between two adjacent pixel modules 200 is short, so the stretching device is not shown in the figure. Figure 7 Schematic diagram of the state after the display screen is stretched.

[0087] Specifically, the stretching device 100 and the pixel module 200 of the display screen can be directly bonded together using adhesive 202, which simplifies the connection operation and facilitates rapid assembly of the display screen. During assembly, the stretching axis 2 on one side of the stretching device 100 of the first display screen can be first connected to the side of the first pixel module 200 parallel to its thickness direction. Then, the side of the second pixel module 200 parallel to its thickness direction can be connected to the stretching axis 2 on the other side of the stretching device 100 of the first display screen. Finally, the stretching axis 2 on one side of the stretching device 100 of the second display screen can be connected to the side of the second pixel module 200 parallel to its thickness direction. Multiple pixel modules 200 and stretching devices 100 of multiple display screens can be connected together according to the above arrangement of one stretching device 100 and one pixel module 200.

[0088] In some embodiments, reference Figure 5 A heat conducting member 201 is connected to the side surface of the pixel module 200 parallel to its thickness direction, and the heat conducting member 201 is adhered to the surface of the side of the stretching shaft 2 away from the force transmission shaft 3 by an adhesive 202.

[0089] Through the above arrangement, the heat generated by the pixel module 200 can be quickly transferred to the stretching device 100 of the display screen through the heat conductor 201, which is conducive to the rapid release of the heat generated by the pixel module 200 through the stretching device 100 of the display screen.

[0090] It should be noted that the thermal conductor 201 can completely cover the side of the pixel module 200 parallel to its thickness direction, so that the heat generated by the pixel module 200 can be more quickly and fully transferred to the stretching device 100 of the display screen. The manufacturing material of the thermal conductor 201 here can be selected to be the same as the manufacturing material of the stretching device 100 of the display screen, and the thermal conductor 201 can also be bonded to the side of the pixel module 200 parallel to its thickness direction using adhesive 202, which makes the setting of the thermal conductor 201 more convenient and quick.

[0091] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A stretching device for a display screen, characterized in that: It comprises a housing (1), two stretching mechanisms symmetrically arranged in the housing (1) along a first direction, and a driving assembly arranged between the two stretching mechanisms, wherein the housing (1) is provided with stretching openings (10) on two side walls along the first direction; The stretching mechanism comprises a stretching shaft (2) extending from the stretching opening (10) into the housing (1) and a force transmission shaft (3) arranged on a side of the stretching shaft (2) away from the stretching opening (10); The stretching shaft (2) comprises a first shaft (21) and a second shaft (22); a first adsorption member (210) is provided on a side surface of the first shaft (21) close to the force transmission shaft (3); a second adsorption member (30) is provided on a side surface of the force transmission shaft (3) close to the first shaft (21); the first adsorption member (210) and the second adsorption member (30) are opposite to each other in the first direction and attract each other; The driving assembly comprises a thermal expansion chamber (4) and a return spring (5), one end of the return spring (5) is connected to the thermal expansion chamber (4), and the other end is connected to the force transmission shaft (3), and one end of the force transmission shaft (3) extends into the thermal expansion chamber (4); The thermal expansion chamber (4) comprises a first thermal expansion chamber (41) and a second thermal expansion chamber (42) separated from each other, the return spring (5) is connected to the first thermal expansion chamber (41), and one end of the force transmission shaft (3) extends into the second thermal expansion chamber (42); the volume of the first thermal expansion chamber (41) is larger than the volume of the second thermal expansion chamber (42), and when the thermal expansion chamber (4) is heated, the gas in the second thermal expansion chamber (42) is heated and expanded first, and when the thermal expansion chamber (4) is cooled, the gas in the second thermal expansion chamber (42) is cooled first; The driving assembly further comprises a stopper (6), a connecting rod (7) and a transmission assembly (8); the stopper (6) is arranged between the stretching shaft (2) and the force transmission shaft (3); the transmission assembly is arranged in the first thermal expansion chamber (41); one end of the connecting rod (7) extends into the first thermal expansion chamber (41) and is connected to the transmission assembly (8); the other end of the connecting rod (7) is connected to the stopper (6); The driving assembly is configured to, when the gases in the first thermal expansion chamber (41) and the second thermal expansion chamber (42) are both expanded by heat, drive the connecting rod (7) to move the stopper (6) away, and apply a thrust to the force transmission shaft (3) so that the force transmission shaft (3) moves in a direction close to the stretching shaft (2) to push the stretching shaft (2) out of the housing (1); and, when the gases in the first thermal expansion chamber (41) and the second thermal expansion chamber (42) are both contracted by cold, stop applying a thrust to the force transmission shaft (3) so that the force transmission shaft (3) moves in a direction away from the stretching shaft (2), and drive the connecting rod (7) to move the stopper (6) to its original position.

2. The stretching device for a display screen according to claim 1, characterized in that: The housing (1) is provided with a stretching groove (11) on the side wall along the first direction, the second shaft (22) is used to extend into the stretching groove (11), the bottom surface of the stretching groove (11) is provided with a first fixing member (110), and the end of the second shaft (22) is provided with a second fixing member (220), and the first fixing member (110) and the second fixing member (220) attract each other.

3. The stretching device for a display screen according to claim 1, characterized in that: The transmission assembly (8) includes a fixed plate (81), a transmission spring (82) and a force transmission plate (83), wherein the fixed plate (81) is connected to the inner side wall of the first thermal expansion chamber (41), and the transmission spring (82) is connected between the fixed plate (81) and the force transmission plate (83); One end of the connecting rod (7) extends into the first thermal expansion chamber (41) and is connected to the force transmission plate (83).

4. The stretching device for a display screen according to claim 3, characterized in that: The connecting rod (7) includes a support rod (71) and two connecting rods (72) symmetrically arranged along the first direction, one end of the support rod (71) is connected to the force transmission plate (83), the other end of the support rod (71) is movably connected to the two connecting rods (72), and the other end of the connecting rod (72) is movably connected to the stopper (6).

5. The stretching device for a display screen according to claim 4, characterized in that: The connecting rod (72) comprises a first rod (721) and a second rod (722) movably connected to each other, the first rod (721) being movably connected to the supporting rod (71), and the second rod (722) being movably connected to the stopper (6); A fixed support rod (12) connected to the housing (1) is provided on different sides of the connecting rod (72), and the two fixed support rods (12) respectively abut against the first rod (721) and the second rod (722).

6. The stretching device for a display screen according to claim 4 or 5, characterized in that: The number of the transmission assemblies (8) is two, and the two transmission assemblies (8) are symmetrically arranged in the first thermal expansion chamber (41) along a second direction, and the second direction is perpendicular to the first direction; The number of the connecting rods (7) is two, and the two connecting rods (7) are symmetrically arranged on both sides of the first thermal expansion chamber (41) along the second direction, and the two support rods (71) are connected to the force transmission plates (83) of the two transmission assemblies (8) in a one-to-one correspondence; The stopper (6) comprises a first stopper (61) and a second stopper (62), wherein the first stopper (61) and the second stopper (62) are respectively connected to the connecting rods (72) of different connecting rods (7).

7. The stretching device for a display screen according to any one of claims 1 to 5, characterized in that: A first guide member (13) is provided on the inner surface of the side wall of the housing (1) along the first direction; The first thermal expansion chamber (41) is connected to a connecting platform (9) located on the outer periphery of the force transmission shaft (3), and a second guide member (91) is provided on a side surface of the connecting platform (9) away from the first thermal expansion chamber (41); The stopper (6) is located between the first guide member (13) and the second guide member (91) and moves along a second direction; the second direction is perpendicular to the first direction.

8. A display screen, characterized in that: include: The stretching device (100) for a display screen according to any one of claims 1 to 7, wherein the stretching device (100) for a display screen is made of a thermally conductive material; A pixel module (200), wherein a side surface of the pixel module (200) parallel to its thickness direction is connected to a surface of a side of the stretching axis (2) away from the force transmission axis (3).

9. The display screen according to claim 8, characterized in that A heat conducting member (201) is connected to a side surface of the pixel module (200) parallel to its thickness direction, and the heat conducting member (201) is adhered to a surface of a side of the stretching shaft (2) away from the force transmission shaft (3) by means of adhesive (202).

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